The Bab attended now and then the classes of Haji Siyyid Kazim Rashti

During his seclusion in Karbala, he attended now and then the classes of Haji Siyyid Kasem, with a shining and luminous countenance. Whenever he entered the class, Haji Siyyid Kasem would show him the greatest respect and honor. When these classes closed, and the period of the pilgrimage was over, the Bab returned to Bu-Shihr and Shiraz and Haji Siyyid Kasem departed to the higher world.

(Episodes in the Life of Munirih Khanum, translated by Ahmad Sohrab, Los Angeles: Persian American Publishing Company, 1924)

https://bahai-library.com/khanum_episodes_life